%0 Journal Article
%A G. S. Rychkov
%T A Criterion for the Existence of Several Limit Cycles of the Abel Equation of the Second Kind
%J Differencialʹnye uravneniâ
%D 2003
%P 1058-1061
%V 39
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2003_39_8_a6/
%G ru
%F DE_2003_39_8_a6